Tuna Sisig Recipe

1 tablespoon oil

2 teaspoons garlic, minced

1 small onion, minced

1/2 red bell pepper, minced

2 cans canned tuna in oil

1/2 tablespoon liquid seasoning

1/4 teaspoon black pepper

1/2 teaspoon brown sugar

1/2 chili pepper (siling pangsigang), minced